10000021004 has 24 divisors (see below), whose sum is σ = 17914541568. Its totient is φ = 4881678480.

The previous prime is 10000020917. The next prime is 10000021007. The reversal of 10000021004 is 40012000001.

It is a junction number, because it is equal to n+sod(n) for n = 10000020982 and 10000021000.

It is not an unprimeable number, because it can be changed into a prime (10000021007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448529 + ... + 470295.

It is an arithmetic number, because the mean of its divisors is an integer number (746439232).

Almost surely, 2^10000021004 is an apocalyptic number.

It is an amenable number.

10000021004 is a deficient number, since it is larger than the sum of its proper divisors (7914520564).

10000021004 is a wasteful number, since it uses less digits than its factorization.

10000021004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24485 (or 24483 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 10000021004 its reverse (40012000001), we get a palindrome (50012021005).

The spelling of 10000021004 in words is "ten billion, twenty-one thousand, four".